sundog vs dapple

sundog and dapple both are nouns.

Word	Noun	Adjective	Verb	Adverb
sundog	Yes	No	No	No
dapple	Yes	No	Yes	No

As nouns, dapple is a hypernym of sundog; that is, dapple is a word with a broader meaning than sundog:

sundog: a bright spot on the parhelic circle; caused by diffraction by ice crystals
dapple: a small contrasting part of something

Other hypernyms of sundog include fleck, maculation, patch, speckle, spot.

sundog (noun)	dapple (noun)
a bright spot on the parhelic circle; caused by diffraction by ice crystals	a small contrasting part of something

sundog (verb)	dapple (verb)
	colour with streaks or blotches of different shades